Add autoloader cli options to `require` and `remove`

Update the `composer require` and `composer remove` commands to support
the `--optimize-autoloader` and `--classmap-authoritative` cli options
and associated configuration settings. All cli entry points that invoke
`Installer::run()` or `AutoloadGenerator::dump()` now have consistent
support for these autoloader optimization flags.

doc/03-cli.md

@@ -185,6 +185,11 @@ php composer.phar require vendor/package:2.* vendor/package2:dev-master
 * **--update-with-dependencies:** Also update dependencies of the newly
   required packages.
 * **--sort-packages:** Keep packages sorted in `composer.json`.
+* **--optimize-autoloader (-o):** Convert PSR-0/4 autoloading to classmap to
+  get a faster autoloader. This is recommended especially for production, but
+  can take a bit of time to run so it is currently not done by default.
+* **--classmap-authoritative (-a):** Autoload classes from the classmap only.
+  Implicitly enables `--optimize-autoloader`.
 
 ## remove
 
@@ -208,6 +213,11 @@ uninstalled.
   terminals or scripts which don't handle backspace characters.
 * **--update-no-dev:** Run the dependency update with the --no-dev option.
 * **--update-with-dependencies:** Also update dependencies of the removed packages.
+* **--optimize-autoloader (-o):** Convert PSR-0/4 autoloading to classmap to
+  get a faster autoloader. This is recommended especially for production, but
+  can take a bit of time to run so it is currently not done by default.
+* **--classmap-authoritative (-a):** Autoload classes from the classmap only.
+  Implicitly enables `--optimize-autoloader`.
 
 ## global
 

src/Composer/Command/RemoveCommand.php

@@ -42,6 +42,8 @@ class RemoveCommand extends Command
                 new InputOption('update-no-dev', null, InputOption::VALUE_NONE, 'Run the dependency update with the --no-dev option.'),
                 new InputOption('update-with-dependencies', null, InputOption::VALUE_NONE, 'Allows inherited dependencies to be updated with explicit dependencies.'),
                 new InputOption('ignore-platform-reqs', null, InputOption::VALUE_NONE, 'Ignore platform requirements (php & ext- packages).'),
+                new InputOption('optimize-autoloader', 'o', InputOption::VALUE_NONE, 'Optimize autoloader during autoloader dump'),
+                new InputOption('classmap-authoritative', 'a', InputOption::VALUE_NONE, 'Autoload classes from the classmap only. Implicitly enables `--optimize-autoloader`.'),
             ))
             ->setHelp(<<<EOT
 The <info>remove</info> command removes a package from the current
@@ -99,9 +101,14 @@ EOT
         $install = Installer::create($io, $composer);
 
         $updateDevMode = !$input->getOption('update-no-dev');
+        $optimize = $input->getOption('optimize-autoloader') || $config->get('optimize-autoloader');
+        $authoritative = $input->getOption('classmap-authoritative') || $config->get('classmap-authoritative');
+
         $install
             ->setVerbose($input->getOption('verbose'))
             ->setDevMode($updateDevMode)
+            ->setOptimizeAutoloader($optimize)
+            ->setClassMapAuthoritative($authoritative)
             ->setUpdate(true)
             ->setUpdateWhitelist($packages)
             ->setWhitelistDependencies($input->getOption('update-with-dependencies'))

src/Composer/Command/RequireCommand.php

@@ -48,6 +48,8 @@ class RequireCommand extends InitCommand
                 new InputOption('update-with-dependencies', null, InputOption::VALUE_NONE, 'Allows inherited dependencies to be updated with explicit dependencies.'),
                 new InputOption('ignore-platform-reqs', null, InputOption::VALUE_NONE, 'Ignore platform requirements (php & ext- packages).'),
                 new InputOption('sort-packages', null, InputOption::VALUE_NONE, 'Sorts packages when adding/updating a new dependency'),
+                new InputOption('optimize-autoloader', 'o', InputOption::VALUE_NONE, 'Optimize autoloader during autoloader dump'),
+                new InputOption('classmap-authoritative', 'a', InputOption::VALUE_NONE, 'Autoload classes from the classmap only. Implicitly enables `--optimize-autoloader`.'),
             ))
             ->setHelp(<<<EOT
 The require command adds required packages to your composer.json and installs them.
@@ -132,6 +134,8 @@ EOT
             return 0;
         }
         $updateDevMode = !$input->getOption('update-no-dev');
+        $optimize = $input->getOption('optimize-autoloader') || $config->get('optimize-autoloader');
+        $authoritative = $input->getOption('classmap-authoritative') || $config->get('classmap-authoritative');
 
         // Update packages
         $this->resetComposer();
@@ -149,6 +153,8 @@ EOT
             ->setPreferSource($input->getOption('prefer-source'))
             ->setPreferDist($input->getOption('prefer-dist'))
             ->setDevMode($updateDevMode)
+            ->setOptimizeAutoloader($optimize)
+            ->setClassMapAuthoritative($authoritative)
             ->setUpdate(true)
             ->setUpdateWhitelist(array_keys($requirements))
             ->setWhitelistDependencies($input->getOption('update-with-dependencies'))